diff --git a/quiche/quic/core/congestion_control/bbr2_misc.h b/quiche/quic/core/congestion_control/bbr2_misc.h
index 078c049..39d4747 100644
--- a/quiche/quic/core/congestion_control/bbr2_misc.h
+++ b/quiche/quic/core/congestion_control/bbr2_misc.h
@@ -156,7 +156,7 @@
    */
   bool probe_up_includes_acks_after_cwnd_limited = false;
   bool probe_up_dont_exit_if_no_queue_ = false;
-  bool probe_up_ignore_inflight_hi = false;
+  bool probe_up_ignore_inflight_hi = true;
 
   /*
    * PROBE_RTT parameters.
diff --git a/quiche/quic/core/congestion_control/bbr2_sender.cc b/quiche/quic/core/congestion_control/bbr2_sender.cc
index 880ea35..c3c5b90 100644
--- a/quiche/quic/core/congestion_control/bbr2_sender.cc
+++ b/quiche/quic/core/congestion_control/bbr2_sender.cc
@@ -176,7 +176,7 @@
     params_.probe_up_dont_exit_if_no_queue_ = true;
   }
   if (ContainsQuicTag(connection_options, kB203)) {
-    params_.probe_up_ignore_inflight_hi = true;
+    params_.probe_up_ignore_inflight_hi = false;
   }
   if (ContainsQuicTag(connection_options, kB204)) {
     model_.SetReduceExtraAckedOnBandwidthIncrease(true);
diff --git a/quiche/quic/core/congestion_control/bbr2_simulator_test.cc b/quiche/quic/core/congestion_control/bbr2_simulator_test.cc
index f807f02..e9dc1e2 100644
--- a/quiche/quic/core/congestion_control/bbr2_simulator_test.cc
+++ b/quiche/quic/core/congestion_control/bbr2_simulator_test.cc
@@ -750,8 +750,9 @@
   EXPECT_TRUE(simulator_result);
 }
 
-// Test Bbr2's reaction to a 100x bandwidth increase during a transfer.
-TEST_F(Bbr2DefaultTopologyTest, QUIC_SLOW_TEST(BandwidthIncrease)) {
+// Test Bbr2's reaction to a 100x bandwidth increase during a transfer with B203
+TEST_F(Bbr2DefaultTopologyTest, QUIC_SLOW_TEST(BandwidthIncreaseB203)) {
+  SetConnectionOption(kB203);
   DefaultTopologyParams params;
   params.local_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(15000);
   params.test_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(100);
@@ -921,9 +922,8 @@
                    sender_->ExportDebugState().bandwidth_hi, 0.92f);
 }
 
-// Test Bbr2's reaction to a 100x bandwidth increase during a transfer with B203
-TEST_F(Bbr2DefaultTopologyTest, QUIC_SLOW_TEST(BandwidthIncreaseB203)) {
-  SetConnectionOption(kB203);
+// Test Bbr2's reaction to a 100x bandwidth increase during a transfer.
+TEST_F(Bbr2DefaultTopologyTest, QUIC_SLOW_TEST(BandwidthIncrease)) {
   DefaultTopologyParams params;
   params.local_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(15000);
   params.test_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(100);
@@ -952,11 +952,9 @@
                    sender_->ExportDebugState().bandwidth_hi, 0.02f);
 }
 
-// Test Bbr2's reaction to a 100x bandwidth increase during a transfer with B203
-// in the presence of ACK aggregation.
-TEST_F(Bbr2DefaultTopologyTest,
-       QUIC_SLOW_TEST(BandwidthIncreaseB203Aggregation)) {
-  SetConnectionOption(kB203);
+// Test Bbr2's reaction to a 100x bandwidth increase during a transfer in the
+// presence of ACK aggregation.
+TEST_F(Bbr2DefaultTopologyTest, QUIC_SLOW_TEST(BandwidthIncreaseAggregation)) {
   DefaultTopologyParams params;
   params.local_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(15000);
   params.test_link.bandwidth = QuicBandwidth::FromKBitsPerSecond(100);